Conveyer



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F-ld NOV. 2., 1925 All@ im June 5, 1928.

June 5, 1928.

G. BLUMEL c'oNvEYr-:R

Filed Nov. 2, 192s dsneets-sneat 2 muli-ym wg w Parente! June 5, 1928.'

y 1,612,843 UNITED STATES APATENT omer..

GUSTAVE BLUEMEL, OF CHICAGOIILINOIS, ASSIGNOR OF ONE-HALF TO DBYING i SYSTEMS, INCL, OF CHICAGO, ILLINOIS, A CORPORATION 0F ILLINOIS.

CONVEYER.

Application filed November 2, 1925-. Serial No. 66,817.v

This invention relates to improvements in conveyers, which are particularly adapted for use in furnaces and the like, and is chiefly characterized by having a reciprocating carrier member and a lifting member reciprocating transversely with respect to the movement of the carrier to lift the ma* terial from the carrier during the reverse movement of the same, and to replace the material on the carrier during the forward movement.

In the present endless chain or apron conveyer, special devices are required for taking up slack, the conveyer belt is complicated and expensive and when used in a furnace a large amount of heat is carried out of the furnace by the belt. The walking beam t-ypes ,require slotted openings in the furnace which admit cold air to the furnace and the material is not conveyed evenly. The lpusher conveyers tend to disturb the arrangement of the material and the use is limited to large objects which are not readily broken.

The main objects of the present invention are to overcome the difficulties `mentioned above; to provide la simplified structure; to provide a conveyer having a simplified driving mechanism; and to accomplish more even movement and more perfect timin of the travel ofthe material being conveyed.

The objects of the invention are accomplished by the structure shown in the accompanying drawings, in which i Figure 1 is a side elevation of a heat treatin furnace equipped with an illustra- -tive emodiment of this invention.

Fig. 2 is a sectional view taken on the line 2 2 of Fig. 1.

t Fig. 3 is a fragmentary elevation of the conveyer bars. l

Fig. 4 is a plan view -of one end of Fig.

Fig. 5 is a sectional view taken on the line 5-5 of Fig. 3. Y

Fig. 6 is a sectional view taken on the line 6-6 of Fig. 7.

Fig. 7 is a sectional view taken on the line 7-7 of Fig. 6.-

In the form of the invention disclosed in' the drawings, the stationar parallel frames or guideways 1 are set on t e bottom wall A and extend longitudinally throughout the length of the furnace B. Slidably mounted on each of the guideways 1 is a carrier memthree shafts are ber comprising the oppositely disposed channels 2. Between the sliding members 2 is mounted in parallel relation, a lifting member 3, which is pivotally connected to the supporting levers 4. The levers 4 are ivoted on the pins 5 which are held in the u s 6 of the stationary guide frame 1, and t e ends of the pins 5 extend through slots 2.1 in the webs of the sliding members. The heads 7 and the Cotter pins 8 on the opposite ends of the pins 5 serve toprevent lateral displacement ofthe sliding members. The movable ends 9 of the levers 4 are pinned to and carry-the operating bar 10.

At one end of the furnace the series of slides and the operating bars are extended and joined together by transverse members 411 and 12 respectively. The slider end member 11 is ends of the slider levers 13 which are jour- .naled on the? shaft 14 carried on the gear housing 15; and the ends of the operating bars l0 are ivotally connected to the upper end of the bar of slider lever 16 which is keyed on the outer ends of the shaft 17 which is journaled in the housing 15.

Within the housing are journaled three cam shafts, the drive shaft 1 8 and two cooperating cam shafts 19 and 20 which are in a 90o angular relation to each other.` The geared together by the spur gears 21 which are keyed to the shafts and are contained within the housing 15.V The driving cam 22 is provided with a 90 lower dwell 23, and an oppositely disposed upper dwell surface 24, which dwells are joined by the oppositely disposed sloping portions 25.V

The cooperating cams 26 and 27 on the shafts 19 and 20 serve to hold the lifter cam roller 28 and the slider roller 29 in engagement pivotally connected to the upperv with the driving cam 22. The rollers are g5 cpliadrantly disposed about the periphery of t e driving cam so that while one roller is on a dwell, the other roller is riding on a sloping portion.Y The slider cam roller 29 is rotatably mounted on the outer end of the cam lever 30 which is keyed to the jack shaft 31 journaled in the housing. The jack shaft 31 also has the opposite ends extending beyond the sides of the housing to which ,are keyed the crank arms 32. The arms 32 are pivotall connected to one end of the links 33 w ich are pivoted to the slider levers 13.

The cycle ,of motion of the levers, when the driving shaft is rotated counter-clockwise, is as follows:

The slider cam roller 29 remains stationary on the upper dwell 24 while 'the lifter roller 28 rides down the incline 25. After one-quarter of the revolution, the lifter roller remains in position while the slider roller is bein lnoved to rotate the jack shaft 31 counter-c ockwise. In the next quarter the lifter cam roller is moved to the right and in the third quarter, the carrier bar cam is returned to the starting position. Consequently, referring to Fig. 3, the resultant movement of the conveyer bars is a forward slide of the carriers 2 followed by a dwell during which the operating bar is moved to the right and rotates the levers 4 counterclockwise. The lifter member 3 is thereby raised vertically in a substantially straight line to t-he Aupper position, indicated in dotted lines, in which the lifter remains while the slides 2 are returned. Then the lifter part 3 is lowered While the slides are again stationary.

As the cycle of movement is continuously repeated, the material deposited on the conveyer is fed forwardly the length of the stroke of the carriers, then lifted while the slides are stationary, held in the raised position while the slides move reversely and then replaced on the slides for the next transporting movement.

As used in a heat treating furnace, bars or pieces of metal to be heat treated, or containers for small pieces, are placed on the conveyer and fed across the furnace in ver perfect timing relation. Loose objects whic are large enough tospan the conveyer elements will be delivered at the opposite end of the furnace in substantially the same relative position in which they were deposited at the start; The material being conveyed is notapt to be disarranged, because the plane of the upper surface of the lifters crosses the top plane of the sliders while the sliders are stationary and movement is being had in only the vertical direction.

The objects of the invention could be accomplished with inclined carrlers and withsomewhat different motions for the two conveyer elements, provided the materials 1s not moving when engaged and when disengaged by the lifter members.

It is manifest that closely fitting openlngs may be provided in the ends of the furnace which openings may be merely large enough furnace, the conveyer elements would, ofy

course, be spaced more closely than shown in the drawings. The coal mass would not be broken up and the chunks would not be squeezed together nor disintegrated by pressure and friction between the particles.

Although but one specific embodiment of this invention has been herein shown and described, it will be understood that numerous details of the construction shown may be altered or omitted without departing'from the spirit of the invention.

l claim: i

In combination in a conveyer, a slidably mounted lonvitudinal carrier element, a vertically moviilale lifter element parallel to said element, a driving cam having a lobe at one side, a cam roller connected to said carrier element, a second cam roller connected to said lifter element and normally disposed with respect to said cam roller, said driving cam being adapted to alternately move said rollers, and means for rotating the driving cam.

Signed at Chicago this 27th day of October, 1925.

GUSTAVE BLUEMEL 

